Home / 631,124,380.68-870,934,936.98-352,668,192.36

Finding the Fourth Proportional to 631,124,380.68, 870,934,936.98 and 352,668,192.36

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Solution

The fourth proportional to 631,124,380.68, 870,934,936.98 and 352,668,192.36 is: 486,672,768.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,124,380.68 : 870,934,936.98 = 352,668,192.36 : x
  2. Step 2: Convert to fraction form
    631,124,380.68/870,934,936.98 = 352,668,192.36/x
  3. Step 3: Cross multiply
    631,124,380.68x = 870,934,936.98 × 352,668,192.36
  4. Step 4: Simplify right side
    631,124,380.68x = 307,151,049,887,907,136
  5. Step 5: Solve for x
    x = 307,151,049,887,907,136/631,124,380.68
  6. Step 6: Final answer
    x = 486,672,768.93

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.